09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Enterprise resource planning [ERP] software; data processing equipment; computers; computer software, including downloadable software; application software; computer software for cloud computing, database management and for authorizing access to databases; databases, including electronic and interactive databases; scientific apparatus and instruments and apparatus and instruments for research, measuring and detecting; apparatus and instruments for broadcasting sound, images or data; accessories for the aforementioned goods; control systems for metal treatment; supply chain management software. Data processing; subscriptions to services relating to computer software and to telecommunications database services; compilation and systemization of information into computer databases; data-based stock control; business administration and management, including in the form of project management; office functions services; information and consultancy services in relation to the aforementioned services; data-based stock control and compiling information in databases. Material treatment, including metal treating and finishing of surfaces; information and consultancy services in relation to the aforementioned services. Design and development of computer hardware and software; IT services; developing and providing software as a service (SAAS); cloud computing; developing and providing platform as a service (PAAS) software; hosting of software for use for others in the field of enterprise resource planning [ERP]; installation, maintenance and rental of computer software and application software; rental of computer hardware; hosting web sites of others; server hosting; development, updating and maintenance of software and database systems; information and consultancy services in relation to the aforementioned services.
A method of producing a case hardened workpiece of a Group IV metal including: placing a workpiece of a Group IV metal in a vessel, creating a low pressure environment in the vessel in which the pressure, pvac, is less than or equal to 10-5 bar, providing oxygen to the vessel to create a reactive atmosphere in the vessel, the reactive atmosphere comprising oxygen at a partial pressure, pO2, in the range of 10 5 bar to 0.01 bar, heating the workpiece to a hardening temperature in the range of 650° C. to 800° C. in the reactive atmosphere or before the reactive atmosphere is created, maintaining the workpiece in the reactive atmosphere at the hardening temperature for a reactive period of at least 5 hours, cooling the workpiece from the hardening temperature to ambient temperature in the reactive atmosphere or in an inert atmosphere.
C22F 1/18 - High-melting or refractory metals or alloys based thereon
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
The present invention relates to an assembly component of an alloy based on iron, nickel and/or cobalt containing at least 10% (w/w) chromium, the assembly component having an annular shape with an inner surface and an outer surface and a thickness between the inner surface and the outer surface in the range of 0.1 mm to 5 mm, the alloy having a content of nitrogen in solid solution providing a microhardness in the range of 250 HV0.05 to 370HV0.05 at a depth from the surface in the range of 0 µm to 100 µm. The invention also relates to an assembly with the assembly component.
C23C 8/34 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
A profiled element suitable for repeated deformation and relaxation, which profiled element is made from a case hardened stainless steel including at least 9% chromium and up to 6% nickel which profiled element has a material thickness in the range of from 0.2 mm to 3 mm and a nitrogen martensitic case with a case depth in the range of from 10 μm to 50 μm and a surface hardness of up to 750 HV0.05 and to a method of case hardening a workpiece made from a stainless steel including at least 9% chromium and up to 5% nickel, which workplace has a material thickness in the range of from 0.2 mm to 3 mm. The profiled element may be a fixing element for fixing a bearing element and a fastening element against each other, and the method is suited in the manufacture of the fixing element.
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
The present invention relates to a profiled element suitable for repeated deformation and relaxation, which profiled element is made from a case hardened stainless steel comprising at least 9 % chromium and up to 5 % nickel, which profiled element has a material thickness in the range of from 0.2mm to 3 mm and a nitrogen martensitic case with a case depth in the range of from 0µm to 50µm and a surface hardness of up to 750 HV0.05and to a method of case hardening a workpiece made from a stainless steel comprising at least 9% chromium and up to 5% nickel,which workpiece has a material thickness in the range of from 0.2mm to 3mm, the method comprising the steps of : - providing a workpiece punched from a sheet of the stainless steel, - optionally embossing the workpiece, - in an atmosphere of a nitrogen containing gas dissolving at least nitrogen in the workpiece at a temperature T high, which is higher than the solubility temperature for nitride and lower than the melting point of the stainless steel, wherein dissolution of nitrogen at the temperature T high is performed to obtain a diffusion depth in the range of 10 µm to 50 µm with a content of nitrogen in the range of 0.05% to 0.5%, -cooling the workpiece after the dissolution step at temperature T high to a temperature T low which is lower than the temperature at which nitrides form in the stainless steel,to provide a nitrogen martensitic case, wherein the cooling is effected within 60seconds. The profiled element may be a fixing element for fixing a bearing element and a fastening element against each other, and the method is suited in the manufacture of the fixing element.
A method for method for solution hardening of a cold deformed workpiece of a passive alloy containing at least 10% chromium, which method includes dissolving at least nitrogen in the workpiece at a temperature T1, which is higher than the solubility temperature for carbide and/or nitride and lower than the melting point of the passive alloy, wherein dissolution of nitrogen at temperature T1 is performed to obtain a diffusion depth in the range of 50 μm to 5 mm, and cooling the workpiece after the dissolution step at temperature T1 to a temperature which is lower than the temperature at which carbides and/or nitrides form in the passive alloy, wherein the cooling step takes place in an inert gas not containing nitrogen. Further, a member, such as a lock washer for securing bolts or nuts prepared using the method.
C23C 8/34 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
The invention relates to a method for method for solution hardening of a cold deformed workpiece of a passive alloy containing at least 10% chromium, which method comprises -dissolving at least nitrogen in the workpiece at a temperature T1, which is higher than the solubility temperature for carbide and/or nitride and lower than the melting point of the passive alloy, wherein dissolution of nitrogen at temperature T1 is performed to obtain a diffusion depth in the range of 0 μm to 5 mm, and -cooling the workpiece after the dissolution step at temperature T1 to a temperature which is lower than the temperature at which carbides and/or nitrides form in the passive alloy, wherein the cooling step takes place in an inert gas not containing nitrogen. The invention further relates to a member, such as a lock washer for securing bolts or nuts prepared using the method.
C23C 8/34 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
9.
METHOD FOR SOLUTION HARDENING OF A COLD DEFORMED WORKPIECE OF A PASSIVE ALLOY, AND A MEMBER SOLUTION HARDENED BY THE METHOD.
The invention relates to a method for method for formation of expanded austenite and/or expanded martensite by solution hardening of a cold deformed workpiece of a passive alloy, which method comprises a first step of dissolving at least nitrogen in the workpiece at a temperature T1, which is higher than the solubility temperature for carbide and/or nitride and lower than the melting point of the passive alloy, and a subsequent second step of dissolving nitrogen and/or carbon in the work piece at a temperature T2, which is lower than the temperature at which carbides and/or nitrides form in the passive alloy. The invention further relates to a member, such as a lock washer for securing bolts or nuts prepared using the method.
